feat: Implement instructor course management pages and service for listing, creating, viewing, and editing courses.

frontend_management/pages/instructor/courses/[id]/edit.vue

@@ -0,0 +1,266 @@
+<template>
+  <div>
+    <!-- Header -->
+    <div class="flex items-center gap-4 mb-6">
+      <q-btn
+        flat
+        round
+        icon="arrow_back"
+        @click="navigateTo(`/instructor/courses/${route.params.id}`)"
+      />
+      <div>
+        <h1 class="text-2xl font-bold text-primary-600">แก้ไขหลักสูตร</h1>
+        <p class="text-gray-600 mt-1">แก้ไขข้อมูลหลักสูตรของคุณ</p>
+      </div>
+    </div>
+
+    <!-- Loading -->
+    <div v-if="initialLoading" class="flex justify-center py-20">
+      <q-spinner-dots size="50px" color="primary" />
+    </div>
+
+    <!-- Form -->
+    <div v-else class="bg-white rounded-xl shadow-sm p-6">
+      <q-form @submit="handleSubmit">
+        <!-- Basic Info -->
+        <h2 class="text-lg font-semibold text-primary-600 mb-4">ข้อมูลพื้นฐาน</h2>
+        
+        <div class="grid grid-cols-1 md:grid-cols-2 gap-4 mb-6">
+          <q-input
+            v-model="form.title.th"
+            label="ชื่อหลักสูตร (ภาษาไทย) *"
+            outlined
+            :rules="[val => !!val || 'กรุณากรอกชื่อหลักสูตร']"
+          />
+          <q-input
+            v-model="form.title.en"
+            label="ชื่อหลักสูตร (English) *"
+            outlined
+            :rules="[val => !!val || 'Please enter course title']"
+          />
+        </div>
+
+        <div class="grid grid-cols-1 md:grid-cols-2 gap-4 mb-6">
+          <q-input
+            v-model="form.slug"
+            label="Slug (URL) *"
+            outlined
+            hint="ใช้สำหรับ URL เช่น javascript-basics"
+            :rules="[val => !!val || 'กรุณากรอก slug']"
+          />
+          <q-select
+            v-model="form.category_id"
+            :options="categoryOptions"
+            label="หมวดหมู่ *"
+            outlined
+            emit-value
+            map-options
+            :rules="[val => !!val || 'กรุณาเลือกหมวดหมู่']"
+          />
+        </div>
+
+        <div class="mb-6">
+          <q-input
+            v-model="form.description.th"
+            label="คำอธิบาย (ภาษาไทย)"
+            type="textarea"
+            outlined
+            autogrow
+            rows="3"
+          />
+        </div>
+
+        <div class="mb-6">
+          <q-input
+            v-model="form.description.en"
+            label="คำอธิบาย (English)"
+            type="textarea"
+            outlined
+            autogrow
+            rows="3"
+          />
+        </div>
+
+        <!-- Pricing -->
+        <q-separator class="my-6" />
+        <h2 class="text-lg font-semibold text-primary-600 mb-4">ราคาและการตั้งค่า</h2>
+
+        <div class="grid grid-cols-1 md:grid-cols-3 gap-4 mb-6">
+          <q-toggle
+            v-model="form.is_free"
+            label="หลักสูตรฟรี"
+            color="primary"
+          />
+          <q-input
+            v-if="!form.is_free"
+            v-model.number="form.price"
+            label="ราคา (บาท)"
+            type="number"
+            outlined
+            prefix="฿"
+            :rules="[val => form.is_free || val > 0 || 'กรุณากรอกราคา']"
+          />
+          <q-toggle
+            v-model="form.have_certificate"
+            label="มีใบประกาศนียบัตร"
+            color="primary"
+          />
+        </div>
+
+        <!-- Thumbnail -->
+        <q-separator class="my-6" />
+        <h2 class="text-lg font-semibold text-primary-600 mb-4">รูปภาพปก</h2>
+
+        <div class="mb-6">
+          <q-input
+            v-model="form.thumbnail_url"
+            label="URL รูปภาพปก"
+            outlined
+            hint="ใส่ URL รูปภาพ (optional)"
+          >
+            <template v-slot:prepend>
+              <q-icon name="image" />
+            </template>
+          </q-input>
+        </div>
+
+        <!-- Preview thumbnail if exists -->
+        <div v-if="form.thumbnail_url" class="mb-6">
+          <img
+            :src="form.thumbnail_url"
+            alt="Thumbnail preview"
+            class="max-w-xs rounded-lg shadow"
+            @error="form.thumbnail_url = ''"
+          />
+        </div>
+
+        <!-- Actions -->
+        <div class="flex justify-end gap-3 mt-8">
+          <q-btn
+            flat
+            label="ยกเลิก"
+            color="grey-7"
+            @click="navigateTo(`/instructor/courses/${route.params.id}`)"
+          />
+          <q-btn
+            type="submit"
+            label="บันทึกการแก้ไข"
+            color="primary"
+            :loading="saving"
+          />
+        </div>
+      </q-form>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useQuasar } from 'quasar';
+import { instructorService, type CreateCourseRequest } from '~/services/instructor.service';
+import { adminService, type CategoryResponse } from '~/services/admin.service';
+
+definePageMeta({
+  layout: 'instructor',
+  middleware: ['auth']
+});
+
+const $q = useQuasar();
+const route = useRoute();
+
+// Data
+const initialLoading = ref(true);
+const saving = ref(false);
+const categories = ref<CategoryResponse[]>([]);
+
+// Form
+const form = ref<CreateCourseRequest>({
+  category_id: 0,
+  title: { th: '', en: '' },
+  slug: '',
+  description: { th: '', en: '' },
+  thumbnail_url: null,
+  price: 0,
+  is_free: true,
+  have_certificate: true
+});
+
+// Category options
+const categoryOptions = computed(() =>
+  categories.value.map(cat => ({
+    label: cat.name.th,
+    value: cat.id
+  }))
+);
+
+// Methods
+const fetchData = async () => {
+  initialLoading.value = true;
+  try {
+    const courseId = parseInt(route.params.id as string);
+    
+    // Fetch course and categories in parallel
+    const [course, cats] = await Promise.all([
+      instructorService.getCourseById(courseId),
+      adminService.getCategories()
+    ]);
+
+    categories.value = cats;
+
+    // Populate form with course data
+    form.value = {
+      category_id: course.category_id,
+      title: { ...course.title },
+      slug: course.slug,
+      description: { ...course.description },
+      thumbnail_url: course.thumbnail_url,
+      price: parseFloat(course.price),
+      is_free: course.is_free,
+      have_certificate: course.have_certificate
+    };
+  } catch (error) {
+    $q.notify({
+      type: 'negative',
+      message: 'ไม่สามารถโหลดข้อมูลหลักสูตรได้',
+      position: 'top'
+    });
+    navigateTo('/instructor/courses');
+  } finally {
+    initialLoading.value = false;
+  }
+};
+
+const handleSubmit = async () => {
+  saving.value = true;
+  try {
+    const courseId = parseInt(route.params.id as string);
+
+    // Set price to 0 if free
+    if (form.value.is_free) {
+      form.value.price = 0;
+    }
+
+    await instructorService.updateCourse(courseId, form.value);
+    
+    $q.notify({
+      type: 'positive',
+      message: 'บันทึกการแก้ไขสำเร็จ',
+      position: 'top'
+    });
+
+    navigateTo(`/instructor/courses/${courseId}`);
+  } catch (error: any) {
+    $q.notify({
+      type: 'negative',
+      message: error.message || 'เกิดข้อผิดพลาด กรุณาลองใหม่',
+      position: 'top'
+    });
+  } finally {
+    saving.value = false;
+  }
+};
+
+// Lifecycle
+onMounted(() => {
+  fetchData();
+});
+</script>

frontend_management/pages/instructor/courses/[id]/index.vue

@@ -0,0 +1,298 @@
+<template>
+  <div>
+    <!-- Loading -->
+    <div v-if="loading" class="flex justify-center py-20">
+      <q-spinner-dots size="50px" color="primary" />
+    </div>
+
+    <template v-else-if="course">
+      <!-- Course Header -->
+      <div class="bg-white rounded-xl shadow-sm p-6 mb-6">
+        <div class="flex flex-col md:flex-row gap-6">
+          <!-- Thumbnail -->
+          <div class="w-full md:w-48 h-32 bg-gradient-to-br from-primary-400 to-primary-600 rounded-lg flex items-center justify-center flex-shrink-0">
+            <img
+              v-if="course.thumbnail_url"
+              :src="course.thumbnail_url"
+              :alt="course.title.th"
+              class="w-full h-full object-cover rounded-lg"
+            />
+            <span v-else class="text-white text-sm">รูปหลักสูตร</span>
+          </div>
+
+          <!-- Info -->
+          <div class="flex-1">
+            <div class="flex items-start justify-between">
+              <div>
+                <h1 class="text-2xl font-bold text-gray-900">{{ course.title.th }}</h1>
+                <p class="text-gray-600 mt-1">{{ course.description.th }}</p>
+              </div>
+
+              <!-- Status Badges -->
+              <div class="flex gap-2">
+                <q-badge v-if="course.is_free" color="purple">เผยแพร่</q-badge>
+                <q-badge :color="getStatusColor(course.status)">
+                  {{ getStatusLabel(course.status) }}
+                </q-badge>
+              </div>
+            </div>
+
+            <!-- Stats -->
+            <div class="flex items-center gap-6 mt-4 text-gray-600">
+              <div class="flex items-center gap-1">
+                <q-icon name="menu_book" size="20px" />
+                <span>{{ totalLessons }} บทเรียน</span>
+              </div>
+              <div class="flex items-center gap-1">
+                <q-icon name="people" size="20px" />
+                <span>0 ผู้เรียน</span>
+              </div>
+            </div>
+          </div>
+
+          <!-- Actions -->
+          <div class="flex flex-col gap-2">
+            <q-btn
+              outline
+              color="primary"
+              label="แก้ไข"
+              icon="edit"
+              @click="navigateTo(`/instructor/courses/${course.id}/edit`)"
+            />
+            <q-btn
+              v-if="course.status === 'DRAFT'"
+              color="primary"
+              label="ขออนุมัติหลักสูตร"
+              @click="requestApproval"
+            />
+          </div>
+        </div>
+      </div>
+
+      <!-- Tabs -->
+      <q-tabs
+        v-model="activeTab"
+        class="bg-white rounded-t-xl shadow-sm text-primary-600"
+        active-color="primary"
+        indicator-color="primary"
+        align="left"
+      >
+        <q-tab name="structure" icon="list" label="โครงสร้าง" />
+        <q-tab name="students" icon="people" label="ผู้เรียน" />
+        <q-tab name="quiz" icon="quiz" label="ผลการทดสอบ" />
+        <q-tab name="announcements" icon="campaign" label="ประกาศ" />
+      </q-tabs>
+
+      <!-- Tab Panels -->
+      <q-tab-panels v-model="activeTab" class="bg-white rounded-b-xl shadow-sm">
+        <!-- Structure Tab -->
+        <q-tab-panel name="structure" class="p-6">
+          <div class="flex justify-between items-center mb-6">
+            <h2 class="text-xl font-semibold text-gray-900">โครงสร้างบทเรียน</h2>
+            <q-btn
+              color="primary"
+              label="จัดการโครงสร้าง"
+              @click="navigateTo(`/instructor/courses/${course.id}/structure`)"
+            />
+          </div>
+
+          <!-- Chapters -->
+          <div v-if="course.chapters.length === 0" class="text-center py-10 text-gray-500">
+            ยังไม่มีบทเรียน
+          </div>
+
+          <div v-else class="space-y-4">
+            <q-card
+              v-for="chapter in course.chapters"
+              :key="chapter.id"
+              flat
+              bordered
+              class="rounded-lg"
+            >
+              <q-card-section>
+                <div class="flex items-center justify-between">
+                  <div>
+                    <div class="font-semibold text-gray-900">
+                      Chapter {{ chapter.sort_order }}: {{ chapter.title.th }}
+                    </div>
+                    <div class="text-sm text-gray-500 mt-1">
+                      {{ chapter.lessons.length }} บทเรียน · {{ getChapterDuration(chapter) }} นาที
+                    </div>
+                  </div>
+                </div>
+              </q-card-section>
+
+              <!-- Lessons -->
+              <q-list separator class="border-t">
+                <q-item
+                  v-for="lesson in chapter.lessons"
+                  :key="lesson.id"
+                  class="py-3"
+                >
+                  <q-item-section avatar>
+                    <q-icon
+                      :name="getLessonIcon(lesson.type)"
+                      :color="getLessonIconColor(lesson.type)"
+                    />
+                  </q-item-section>
+                  <q-item-section>
+                    <q-item-label>
+                      Lesson {{ chapter.sort_order }}.{{ lesson.sort_order }}: {{ lesson.title.th }}
+                    </q-item-label>
+                  </q-item-section>
+                  <q-item-section side>
+                    <span class="text-sm text-gray-500">{{ lesson.duration_minutes }} นาที</span>
+                  </q-item-section>
+                </q-item>
+              </q-list>
+            </q-card>
+          </div>
+        </q-tab-panel>
+
+        <!-- Students Tab -->
+        <q-tab-panel name="students" class="p-6">
+          <div class="text-center py-10 text-gray-500">
+            <q-icon name="people" size="60px" color="grey-4" class="mb-4" />
+            <p>ยังไม่มีผู้เรียนในหลักสูตรนี้</p>
+          </div>
+        </q-tab-panel>
+
+        <!-- Quiz Results Tab -->
+        <q-tab-panel name="quiz" class="p-6">
+          <div class="text-center py-10 text-gray-500">
+            <q-icon name="quiz" size="60px" color="grey-4" class="mb-4" />
+            <p>ยังไม่มีผลการทดสอบ</p>
+          </div>
+        </q-tab-panel>
+
+        <!-- Announcements Tab -->
+        <q-tab-panel name="announcements" class="p-6">
+          <div class="text-center py-10 text-gray-500">
+            <q-icon name="campaign" size="60px" color="grey-4" class="mb-4" />
+            <p>ยังไม่มีประกาศ</p>
+          </div>
+        </q-tab-panel>
+      </q-tab-panels>
+    </template>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useQuasar } from 'quasar';
+import {
+  instructorService,
+  type CourseDetailResponse,
+  type ChapterResponse
+} from '~/services/instructor.service';
+
+definePageMeta({
+  layout: 'instructor',
+  middleware: ['auth']
+});
+
+const $q = useQuasar();
+const route = useRoute();
+
+// Data
+const course = ref<CourseDetailResponse | null>(null);
+const loading = ref(true);
+const activeTab = ref('structure');
+
+// Computed
+const totalLessons = computed(() => {
+  if (!course.value) return 0;
+  return course.value.chapters.reduce((sum, ch) => sum + ch.lessons.length, 0);
+});
+
+// Methods
+const fetchCourse = async () => {
+  loading.value = true;
+  try {
+    const courseId = parseInt(route.params.id as string);
+    course.value = await instructorService.getCourseById(courseId);
+  } catch (error) {
+    $q.notify({
+      type: 'negative',
+      message: 'ไม่สามารถโหลดข้อมูลหลักสูตรได้',
+      position: 'top'
+    });
+    navigateTo('/instructor/courses');
+  } finally {
+    loading.value = false;
+  }
+};
+
+const getStatusColor = (status: string) => {
+  const colors: Record<string, string> = {
+    APPROVED: 'green',
+    PENDING: 'yellow',
+    DRAFT: 'grey',
+    REJECTED: 'red'
+  };
+  return colors[status] || 'grey';
+};
+
+const getStatusLabel = (status: string) => {
+  const labels: Record<string, string> = {
+    APPROVED: 'อนุมัติแล้ว',
+    PENDING: 'รอตรวจสอบ',
+    DRAFT: 'แบบร่าง',
+    REJECTED: 'ถูกปฏิเสธ'
+  };
+  return labels[status] || status;
+};
+
+const getChapterDuration = (chapter: ChapterResponse) => {
+  return chapter.lessons.reduce((sum, l) => sum + l.duration_minutes, 0);
+};
+
+const getLessonIcon = (type: string) => {
+  const icons: Record<string, string> = {
+    VIDEO: 'play_circle',
+    QUIZ: 'quiz',
+    DOCUMENT: 'description'
+  };
+  return icons[type] || 'article';
+};
+
+const getLessonIconColor = (type: string) => {
+  const colors: Record<string, string> = {
+    VIDEO: 'primary',
+    QUIZ: 'orange',
+    DOCUMENT: 'grey'
+  };
+  return colors[type] || 'grey';
+};
+
+const requestApproval = () => {
+  $q.dialog({
+    title: 'ขออนุมัติหลักสูตร',
+    message: 'ยืนยันการขออนุมัติหลักสูตรนี้?',
+    cancel: true,
+    persistent: true
+  }).onOk(async () => {
+    try {
+      const courseId = parseInt(route.params.id as string);
+      await instructorService.sendForReview(courseId);
+      $q.notify({
+        type: 'positive',
+        message: 'ส่งคำขออนุมัติแล้ว',
+        position: 'top'
+      });
+      // Refresh course data
+      fetchCourse();
+    } catch (error: any) {
+      $q.notify({
+        type: 'negative',
+        message: error.data?.error?.message || 'ไม่สามารถส่งคำขอได้',
+        position: 'top'
+      });
+    }
+  });
+};
+
+// Lifecycle
+onMounted(() => {
+  fetchCourse();
+});
+</script>

frontend_management/pages/instructor/courses/create.vue

@@ -109,9 +109,9 @@
         <div class="mb-6">
           <q-input
             v-model="form.thumbnail_url"
-            label="URL รูปภาพปก"
+            label="URL รูปภาพปก *"
             outlined
-            hint="ใส่ URL รูปภาพ (optional)"
+            :rules="[val => !!val || 'กรุณากรอก URL รูปภาพปก']"
           >
             <template v-slot:prepend>
               <q-icon name="image" />

frontend_management/pages/instructor/courses/index.vue

@@ -236,7 +236,7 @@ const fetchCourses = async () => {
 const getStatusColor = (status: string) => {
   const colors: Record<string, string> = {
     APPROVED: 'green',
-    PENDING: 'yellow',
+    PENDING: 'orange',
     DRAFT: 'grey',
     REJECTED: 'red'
   };
@@ -275,12 +275,23 @@ const confirmDelete = (course: CourseResponse) => {
     message: `คุณต้องการลบหลักสูตร "${course.title.th}" หรือไม่?`,
     cancel: true,
     persistent: true
-  }).onOk(() => {
-    $q.notify({
-      type: 'positive',
-      message: 'ลบหลักสูตรสำเร็จ',
-      position: 'top'
-    });
+  }).onOk(async () => {
+    try {
+      await instructorService.deleteCourse(course.id);
+      $q.notify({
+        type: 'positive',
+        message: 'ลบหลักสูตรสำเร็จ',
+        position: 'top'
+      });
+      // Refresh list
+      fetchCourses();
+    } catch (error) {
+      $q.notify({
+        type: 'negative',
+        message: 'ไม่สามารถลบหลักสูตรได้',
+        position: 'top'
+      });
+    }
   });
 };
 

frontend_management/services/instructor.service.ts

@@ -147,16 +147,119 @@ export const instructorService = {
         }
 
         const token = getAuthToken();
+
+        // Clean data - remove empty thumbnail_url
+        const cleanedData = { ...data };
+        if (!cleanedData.thumbnail_url) {
+            delete cleanedData.thumbnail_url;
+        }
+
+        console.log('=== CREATE COURSE DEBUG ===');
+        console.log('Body:', JSON.stringify({ data: cleanedData }, null, 2));
+        console.log('===========================');
+
         const response = await $fetch<{ code: number; data: CourseResponse }>('/api/instructors/courses', {
             method: 'POST',
             baseURL: config.public.apiBaseUrl as string,
             headers: {
                 Authorization: `Bearer ${token}`
             },
+            body: { data: cleanedData }
+        });
+
+        return response.data;
+    },
+
+    async getCourseById(courseId: number): Promise<CourseDetailResponse> {
+        const config = useRuntimeConfig();
+        const useMockData = config.public.useMockData as boolean;
+
+        if (useMockData) {
+            await new Promise(resolve => setTimeout(resolve, 500));
+            return MOCK_COURSE_DETAIL;
+        }
+
+        const token = getAuthToken();
+        const response = await $fetch<{ code: number; data: CourseDetailResponse }>(`/api/instructors/courses/${courseId}`, {
+            baseURL: config.public.apiBaseUrl as string,
+            headers: {
+                Authorization: `Bearer ${token}`
+            }
+        });
+
+        return response.data;
+    },
+
+    async updateCourse(courseId: number, data: CreateCourseRequest): Promise<CourseResponse> {
+        const config = useRuntimeConfig();
+        const useMockData = config.public.useMockData as boolean;
+
+        if (useMockData) {
+            await new Promise(resolve => setTimeout(resolve, 500));
+            return {
+                ...MOCK_COURSES[0],
+                id: courseId,
+                ...data,
+                price: String(data.price)
+            } as CourseResponse;
+        }
+
+        const token = getAuthToken();
+
+        // Debug log
+        console.log('=== UPDATE COURSE DEBUG ===');
+        console.log('URL:', `${config.public.apiBaseUrl}/api/instructors/courses/${courseId}`);
+        console.log('Body:', JSON.stringify({ data }, null, 2));
+        console.log('===========================');
+
+        const response = await $fetch<{ code: number; data: CourseResponse }>(`/api/instructors/courses/${courseId}`, {
+            method: 'PUT',
+            baseURL: config.public.apiBaseUrl as string,
+            headers: {
+                Authorization: `Bearer ${token}`
+            },
             body: { data }
         });
 
         return response.data;
+    },
+
+    async deleteCourse(courseId: number): Promise<void> {
+        const config = useRuntimeConfig();
+        const useMockData = config.public.useMockData as boolean;
+
+        if (useMockData) {
+            await new Promise(resolve => setTimeout(resolve, 500));
+            return;
+        }
+
+        const token = getAuthToken();
+        await $fetch(`/api/instructors/courses/${courseId}`, {
+            method: 'DELETE',
+            baseURL: config.public.apiBaseUrl as string,
+            headers: {
+                Authorization: `Bearer ${token}`
+            }
+        });
+    },
+
+    async sendForReview(courseId: number): Promise<void> {
+        const config = useRuntimeConfig();
+        const useMockData = config.public.useMockData as boolean;
+
+        if (useMockData) {
+            await new Promise(resolve => setTimeout(resolve, 500));
+            return;
+        }
+
+        const token = getAuthToken();
+        await $fetch(`/api/instructors/courses/send-review/${courseId}`, {
+            method: 'POST',
+            baseURL: config.public.apiBaseUrl as string,
+            headers: {
+                Authorization: `Bearer ${token}`
+            }
+        });
     }
 };
 
@@ -177,3 +280,154 @@ export interface CreateCourseRequest {
     is_free: boolean;
     have_certificate: boolean;
 }
+
+// Course detail with chapters and lessons
+export interface CourseDetailResponse extends CourseResponse {
+    chapters: ChapterResponse[];
+}
+
+export interface ChapterResponse {
+    id: number;
+    course_id: number;
+    title: { en: string; th: string };
+    description: { en: string; th: string };
+    sort_order: number;
+    is_published: boolean;
+    created_at: string;
+    updated_at: string;
+    lessons: LessonResponse[];
+}
+
+export interface LessonResponse {
+    id: number;
+    chapter_id: number;
+    title: { en: string; th: string };
+    content: { en: string; th: string } | null;
+    type: 'VIDEO' | 'QUIZ' | 'DOCUMENT';
+    duration_minutes: number;
+    sort_order: number;
+    is_sequential: boolean;
+    prerequisite_lesson_ids: number[] | null;
+    require_pass_quiz: boolean;
+    is_published: boolean;
+    created_at: string;
+    updated_at: string;
+    quiz: QuizResponse | null;
+}
+
+export interface QuizResponse {
+    id: number;
+    lesson_id: number;
+    title: { en: string; th: string };
+    description: { en: string; th: string };
+    passing_score: number;
+    time_limit: number;
+    shuffle_questions: boolean;
+    shuffle_choices: boolean;
+    show_answers_after_completion: boolean;
+}
+
+// Mock course detail
+const MOCK_COURSE_DETAIL: CourseDetailResponse = {
+    ...MOCK_COURSES[0],
+    chapters: [
+        {
+            id: 1,
+            course_id: 1,
+            title: { en: 'Chapter 1: Getting Started', th: 'บทที่ 1: เริ่มต้น' },
+            description: { en: 'Introduction to JavaScript', th: 'แนะนำ JavaScript' },
+            sort_order: 1,
+            is_published: true,
+            created_at: '2024-01-15T00:00:00Z',
+            updated_at: '2024-01-15T00:00:00Z',
+            lessons: [
+                {
+                    id: 1,
+                    chapter_id: 1,
+                    title: { en: 'What is JavaScript', th: 'JavaScript คืออะไร' },
+                    content: { en: 'Introduction', th: 'แนะนำ' },
+                    type: 'VIDEO',
+                    duration_minutes: 15,
+                    sort_order: 1,
+                    is_sequential: true,
+                    prerequisite_lesson_ids: null,
+                    require_pass_quiz: false,
+                    is_published: true,
+                    created_at: '2024-01-15T00:00:00Z',
+                    updated_at: '2024-01-15T00:00:00Z',
+                    quiz: null
+                },
+                {
+                    id: 2,
+                    chapter_id: 1,
+                    title: { en: 'Variables', th: 'ตัวแปร' },
+                    content: { en: 'Learn variables', th: 'เรียนรู้ตัวแปร' },
+                    type: 'VIDEO',
+                    duration_minutes: 20,
+                    sort_order: 2,
+                    is_sequential: true,
+                    prerequisite_lesson_ids: null,
+                    require_pass_quiz: false,
+                    is_published: true,
+                    created_at: '2024-01-15T00:00:00Z',
+                    updated_at: '2024-01-15T00:00:00Z',
+                    quiz: null
+                },
+                {
+                    id: 3,
+                    chapter_id: 1,
+                    title: { en: 'Chapter 1 Quiz', th: 'แบบทดสอบบทที่ 1' },
+                    content: null,
+                    type: 'QUIZ',
+                    duration_minutes: 10,
+                    sort_order: 3,
+                    is_sequential: true,
+                    prerequisite_lesson_ids: null,
+                    require_pass_quiz: true,
+                    is_published: true,
+                    created_at: '2024-01-15T00:00:00Z',
+                    updated_at: '2024-01-15T00:00:00Z',
+                    quiz: {
+                        id: 1,
+                        lesson_id: 3,
+                        title: { en: 'Chapter 1 Quiz', th: 'แบบทดสอบบทที่ 1' },
+                        description: { en: 'Test your knowledge', th: 'ทดสอบความรู้' },
+                        passing_score: 70,
+                        time_limit: 10,
+                        shuffle_questions: true,
+                        shuffle_choices: true,
+                        show_answers_after_completion: true
+                    }
+                }
+            ]
+        },
+        {
+            id: 2,
+            course_id: 1,
+            title: { en: 'Chapter 2: Functions', th: 'บทที่ 2: ฟังก์ชัน' },
+            description: { en: 'Learn about functions', th: 'เรียนรู้เกี่ยวกับฟังก์ชัน' },
+            sort_order: 2,
+            is_published: true,
+            created_at: '2024-01-15T00:00:00Z',
+            updated_at: '2024-01-15T00:00:00Z',
+            lessons: [
+                {
+                    id: 4,
+                    chapter_id: 2,
+                    title: { en: 'Creating Functions', th: 'การสร้างฟังก์ชัน' },
+                    content: { en: 'How to create functions', th: 'วิธีสร้างฟังก์ชัน' },
+                    type: 'VIDEO',
+                    duration_minutes: 25,
+                    sort_order: 1,
+                    is_sequential: true,
+                    prerequisite_lesson_ids: null,
+                    require_pass_quiz: false,
+                    is_published: true,
+                    created_at: '2024-01-15T00:00:00Z',
+                    updated_at: '2024-01-15T00:00:00Z',
+                    quiz: null
+                }
+            ]
+        }
+    ]
+};